“I hope Justice Ginsburg serves for a long time, but if there’s an opening on this court, I’m going to be hell-bent to put a conservative to replace whoever steps down for whatever reason,” Graham told host Chris Wallace.

The Trump administration cannot put a question about citizenship status on the 2020 census, a federal judge in New York ruled Friday in a boost to proponents of counting immigrants. Among other things, the judge said, Ross didn't follow a law requiring that he give Congress three years notice of any plan to add a question about citizenship to the census.

The U.S. Supreme Court is also poised to address the issue Feb. 19, meaning the legal issue is far from decided for good.

The constitutionally mandated census is supposed to count all people living in the U.S., including noncitizens and immigrants living in the country illegally.